Datasheet

REV. E
AD7664
–9–
FREQUENCY (kHz)
057114 171 285228
AMPLITUDE (dB of Full Scale)
0
–20
–180
–40
–60
–80
–100
–120
–140
–160
8192 POINT FFT
f
S
= 570kHz
f
IN
= 45.5322kHz, –0.5dB
SNR = 90.1dB
SINAD = 89.4dB
THD = –97.1dB
SFDR = 97.5dB
TPC 7. FFT Plot
1
SNR AND S/[N+D] – dB
FREQUENCY – kHz
10010
90
80
75
70
100
85
1000
95
ENOB – Bits
15.0
14.0
13.5
13.0
16.0
14.5
15.5
SNR
S/(N+D)
ENOB
TPC 8. SNR, S/(N+D), and ENOB vs. Frequency
1
THD, HARMONIC – dB
FREQUENCY – kHz
10010
–70
–80
–85
–90
–95
–100
–105
–110
–60
–75
1000
–65
SFDR
THD
SFDR – dB
100
90
85
80
75
70
65
60
110
95
105
SECOND HARMONIC
THIRD HARMONIC
TPC 9. THD, Harmonics, and SFDR vs. Frequency
92
–60
SNR (REFERRED TO FULL SCALE) – dB
INPUT LEVEL – dB
0–20–40
90
88
86
SNR
S/(N+D)
–50 –30 –10
TPC 10. SNR and S/(N+D) vs. Input Level
(Referred to Full Scale)
96
–55
SNR AND S/(N+D) – dB
TEMPERATURE – C
–35 125105856545255–15
93
90
87
84
–96
–98
–100
–102
–104
THD – dB
THD
SNR
TPC 11. SNR, S/(N+D), THD vs. Temperature
OVDD, ALL MODES
DVDD, IMPULSE
AVDD, IMPULSE
DVDD, WARP/NORMAL
AVDD, WARP/NORMAL
100k
0.1
OPERATING CURRENTS – A
SAMPLING RATE – SPS
100k1k101 100 10k 1M
10k
1k
100
10
1
0.1
0.01
0.001
TPC 12. Operating Currents vs. Sample Rate